| Models | 
            IR-TA | 
            IR-TAP | 
        
        
            | Measuring System | 
            Wide band radiation thermometer | 
            Narrow band radiation thermometer | 
        
        
            | Measuring Temperature Range | 
            -40 to 500°C | 
            -40 to 500°C | 
        
        
            | Detecting Element | 
            Thermopile | 
            Thermopile | 
        
        
            | Measuring Wavelength | 
            8 to 14μm | 
        
        
            | Measuring Diameter | 
            φ45/500mm | 
            φ30/1000mm | 
        
        
            | Rated Accuracy | 
            ±1% of measured value or ±2°C, whichever is greater. However,  
            ±3°C for 0°C or less to -30°C, and ±5°C for -30°C or less. | 
            ±1% of measured value or ±2°C, whichever is greater.  
            However, ±3°C for -30 to 0°C, and ±5°C for -30°C or lower. | 
        
        
            | Repeatability | 
            Within ±1°C ±1digit | 
        
        
            | Response Time | 
            0.8sec. (90% response) | 
        
        
            | Collimation | 
            Center point is indicated by laser beam | 
            Center point is indicated by laser beam | 
        
        
            | Display | 
            LCD 3-digit display | 
        
        
            | Emissivity Correction | 
            0.30 to 1.90 (0.01 step) | 
            0.30 to 1.90 (Initial value 0.95) | 
        
        
            | Alarm | 
            Upper limit alarm (beeper) | 
            An upper/lower limit alarm for each group | 
        
        
            | Working Temperature Range | 
            0 to 50°C | 
        
        
            | Power Supply | 
            Alkaline battery, type R-6 (AA) or equivalent, 2pcs | 
        
        
            | Batter Life | 
            Approx. 50 hours for continuous use | 
            Approx. 30 hours for continuous use | 
        
        
            | Weight | 
            Approx. 180g | 
            Approx. 220g |